Electric heater



FIG. 1 is a top front and left side perspective view of the electricheater showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line showing is included for the purpose of illustratingportions of the article and forms no part of the claimed design.

The ornamental design for an electric heater, as shown and described.